Recent questions in Quantum Field Theory

+7 votes

0 answers

Are photons (p) and electrons (e) just different forms of the same fundamental energetic driving force? I.e. does the (p) become part of the (e) as it hits matter and excites the (e), and then emitted as a (p) again when the (e) relaxes?

asked Apr 13, 2023 in Quantum Field Theory by SJS Building

+273 votes

0 answers

In the vast gulfs between galaxies where expansion is occurring, if the quantum field is inseparable from space then shouldn't the quantum field also be expanding, or at least increasing in its extent, as you can't have one without the other?

asked Apr 13, 2023 in Quantum Field Theory by Bolintk

+31 votes

0 answers

Double-slit experiment: Say you cover the right slit, record the resulting pattern, cover the left slit, record the pattern, and sum the two patterns. Will that be the same result as for both slits simultaneously? Why or why not?

asked Apr 13, 2023 in Quantum Field Theory by UnicornHills

+24 votes

0 answers

What do physicists mean by "excitation" of a field? Is there any visual proof of such an event?

asked Apr 13, 2023 in Quantum Field Theory by LunarTwilight

+9 votes

0 answers

In Young's double slit experiment, what happens to the brightness of the bright fringes if the wavelength is increased?

asked Apr 12, 2023 in Quantum Field Theory by kpm

+26 votes

0 answers

How do we know that the ground state of a quantum field theory is unique?

asked Apr 12, 2023 in Quantum Field Theory by DFM

+20 votes

0 answers

Who was Bohr? What was his response when Einstein questioned his view on wave-particle duality in quantum mechanics (notably on the double slit experiment)?

asked Apr 12, 2023 in Quantum Field Theory by John McGann

+7 votes

0 answers

How do I make a slit in a dress?

asked Apr 12, 2023 in Quantum Field Theory by revelationmedical

+13 votes

0 answers

What is the magnetic field created by a current in an inductor? Is it classical or quantum theory?

asked Apr 12, 2023 in Quantum Field Theory by diy_master (1.7k points)

+20 votes

0 answers

If quantum mechanics is a theory of probability, what does that say about the reality of particles?

asked Apr 12, 2023 in Quantum Field Theory by King Herald

+18 votes

0 answers

What is the function of a double slit in the diffraction of light?

asked Apr 12, 2023 in Quantum Field Theory by Harry Stottle

+22 votes

0 answers

What are the sub-fields of theoretical physics?

asked Apr 12, 2023 in Quantum Field Theory by NovaSeeker

+9 votes

0 answers

How does dark energy affect our understanding of quantum field theories in cosmology?

asked Apr 12, 2023 in Quantum Field Theory by sub7even75 (3.3k points)

+16 votes

0 answers

Can physicists calculate how much decoherence decreases the probability of quantum tunnelling for a given quantum object through a given barrier?

asked Apr 12, 2023 in Quantum Field Theory by gib.son

+26 votes

0 answers

Is Neil deGrasse Tyson wrong about the double-slit experiment?

asked Apr 12, 2023 in Quantum Field Theory by MysticHorizon

+227 votes

0 answers

In QFT, if particles don't exist, then why do researchers speak about the size of them?

asked Apr 12, 2023 in Quantum Field Theory by AstralFlare

+95 votes

0 answers

Is there a field of engineering based around quantum mechanics?

asked Apr 12, 2023 in Quantum Field Theory by LunarFlare

+10 votes

0 answers

In the nature (real world), are there objects which are completely (perfectly) in stable ground state?

asked Apr 12, 2023 in Quantum Field Theory by LuminousEcho

+209 votes

0 answers

If an electron, being a matter particle, has a definitive location, like the baseball in the hand of a baseball player, how can it behave like a wave in the two slit experiment?

asked Apr 12, 2023 in Quantum Field Theory by Little Ern

+109 votes

0 answers

What is the difference between the theory of general relativity and quantum field theory? Which one has more experimental evidence?

asked Apr 12, 2023 in Quantum Field Theory by kc

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Recent questions in Quantum Field Theory

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